[Bug 104975] Delay in skl_disable_plane() causes a system freeze

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104975

--- Comment #56 from Azhar <azhar.shaikh at intel.com> ---
(In reply to Ville Syrjala from comment #54)
> git://github.com/vsyrjala/linux.git plane_disable_before_ddb_wm_changes
> 
> This disables all planes on the pipe which may be affected by watermark/ddb
> changes (or any other change for that matter) prior to changing the ddb
> allocations. Any plane that is supposed to remain visible will get
> re-enabled later in the sequence.

I tried the patch on Linux 4.15.18 stable branch and was able to reproduce the
issue.

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